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/sci/ - Science, Technology, Engineering, and Mathematics

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Anonymous 20/07/25(Sat)13:03 No. 16964 ID: 5101b9 [Reply]

File 159567502322.png - (37.92KB , 1200x388 , neuralink.png )

What do you guys think about Neuralink? Is it a danger to humanity? Is it actually possible to create such a product? How long until it gets into our lives? Will it finish anonymity? How to save ourselves?

11 posts omitted. Click Reply to view.
Anonymous 20/12/29(Tue)21:27 No. 17175 ID: 0ceffc


Anonymous 20/12/29(Tue)21:30 No. 17176 ID: 0ceffc

Behold the French celestial girlfriend conjecture.
For integer n.
If n divided by 3 has no remainder, divide n by three.
If n divided by 3 has remainder 1, n = 2n+1
If n divided by 3 has remainder 2, n = 3n+3

N will always return to 1 if you repeat this procedure on n.

Anonymous 20/12/29(Tue)21:55 No. 17177 ID: 6cedb9

More like neuro dumb

Climate change etc Anonymous 20/07/17(Fri)12:51 No. 16945 ID: c6e9b2 [Reply]

File 159498309867.jpg - (1.45MB , 2511x1832 , EdHpCoKX0AUvs1I.jpg )

Today is it 100 weeks since it all began.

Amazing, no?


13 posts omitted. Click Reply to view.
Anonymous 20/12/21(Mon)05:58 No. 17156 ID: e08dd8

It's math. It's just fucking math. You can't deny math. There isn't enough uranium or any other non-renewable resources on the planet to power it for much longer at the rate it's being used. The fact that you can't even comprehend something as simple as this means you're a complete moron, and there is no point debating you.

>There's even games that specialize in asteroid mining
You're actually serious? There's a game where you have magic and can fight dragons, too. Are you going to suggest next that magic and dragons are also possible? What a joke.

Anonymous 20/12/22(Tue)08:26 No. 17166 ID: 9b9d72

You're obviously Jewish. Yes it's that easy to see. That being so there's point in talking to you.

Anonymous 20/12/23(Wed)02:34 No. 17170 ID: 17fbe3


You've been so thoroughly outdone that you reached deep, deep into your mind and came up with your last argument

Anti-semetism and name-calling.

Wow. Dude you're a fucking genius. Hey EVERYONE come over and take a look at how much of a genius this guy is. When you've been made to look like a complete moron, just call him a Jew and you won the argument!

God, I fucking love imageboards.

GNOME Diversity law Anonymous 19/08/04(Sun)00:38 No. 16819 ID: 692c8d [Reply]

File 156487192645.jpg - (118.24KB , 800x450 , 1564868517688.jpg )


Why does free software promise what it can't deliver?

2 posts omitted. Click Reply to view.
El Diablo El Diablo 20/12/09(Wed)05:54 No. 17103 ID: 74097f

Here's a different idea about Gnome. What if the whole thing is being damaged by commercial interest? What if people are paid off to trash the whole thing? Some illumination of the idea.

I noticed that every time Linux gets a good GUI system that's almost there it runs off the rails and turns to shit. If there was a good serious stable GUI for Linux I expect it could rapidly replace windows. It can now but not without a lot of trouble.

Some examples. There was a GUI desktop called Enlightenment. It was way ahead of even windows. Very good stuff. It had some bugs but the basics were there and then all of a sudden they rewrite the whole damn thing and make no progress for many, many years.

Say you are Microsoft and you see this kick ass program full of features that would not come up until Apple does some of the same stuff later. It uses minimal resources and is fast on lightweight computers, it's free and it threatens to derail your multi-billion dollar profit stream.. OH SHIT. So you get a lawyer and he contacts the few main contributors to this desktop and they sign non-disclosure agreements. They offer them say a million a piece for maybe the top 5 guys to stall this thing for 8 years or so.

Another. Gnome is getting really good. Most things falling into place and it's rapidly becoming the desktop of choice. If it keeps going like it was then it could cause a network effect and draw in mass support and WHOOPS they rewrite the whole thing, take away tons of options and turn it into some freakish tablet interface that everyone hates. Whole thing stalls for for years and years while they screw everything up. Eventually causing forks into several different desktop GUI systems. Hmm...

Another and this is the one that made me come up with this idea because it was so damn freakishly absurd. PC-BSD. I was really liking this. It was extremely close to being a plug and play go to operating system with excellent file system. All of the unix tamed so you could use it like a normal system and then Shazam, all of a sudden they change the name to some nonsense, TrueOS(what the hell does that mean), then another name change to Trident OS and then immediately after that they completely stop using BSD as their base and switch to Void Linux. WHAT? I mean who ever heard of that? Why would you work for over a decade on FreeBSD base then all of a sudden switch to some obscure Linux? Total bafflement. Makes no sense at all. Their excuse was that FreeBSD was not moving fast enough but FreeBSD had all it needed to be a great desktop. They even wrote a great window manager and LOTS of supporting software and then abandoned it.

Now I can't prove anything but this last switch with PC-BSD really made me think that they just paid some people off and torpedoed alternate OS development. It was so bizarre. I mean if they were going to move to Linux why not Debian for which t Message too long. Click here to view the full text.

Anonymous 20/12/09(Wed)06:52 No. 17105 ID: 746924

>If there was a good serious stable GUI for Linux I expect it could rapidly replace windows.
This is a hilariously naive vision of the situation, and you've hinged your entire point on this idea.

First, the interface is just one of the reasons why someone might choose to use an operating system over another. The software ecosystem is certainly much more important, as is the hardware compatibility. Windows wins over Linux on both these fronts, although there's a few specialized tools here and there that really do only work on Linux.

Second, there's never really been a desktop environment for Linux that was objectively better than Windows'. Microsoft just has deeper pockets than any DE organization and can afford to spend as much as it wants on GUI research.

Finally, if someone has bought into a platform, it would not be enough for a competitor's GUI to be better to get them to switch. It would have to be significantly better, perhaps even revolutionary, to justify the cost of migrating to an unfamiliar platform.

El+Diablo+El+Diablo 20/12/13(Sun)16:15 No. 17120 ID: 222d8c

"...If there was a good serious stable GUI for Linux I expect it could rapidly replace windows..."

"This is a hilariously naive vision of the situation, and you've hinged your entire point on this idea."

"Second, there's never really been a desktop environment for Linux that was objectively better than Windows'. Microsoft just has deeper pockets than any DE organization and can afford to spend as much as it wants on GUI research.">>17105

Your only emphasizing my point. Enlightenment was not finished and went onto a multi-year halt where everything stopped. Enlightenment had many features that Windows took many years to implement. It was also smaller and faster. With more work maybe it would have crushed the bugs it had. Instead it came to a halt.

Gnome instead of refining what they had discombobulated into a totally different desktop. Removing features and totally changing the way it worked.

They didn't die they were murdered.

Anonymous 20/11/29(Sun)21:18 No. 17078 ID: e7324e [Reply]

File 16066811335.jpg - (364.56KB , 1242x2208 , cd.jpg )

What's /sci/ opinion about GPG and pass?

Supermath Anonymous 20/10/05(Mon)09:05 No. 17025 ID: 22f5ea [Reply]

File 160188151358.jpg - (1.20MB , 750x1148 , IMG_2401.jpg )

I'm too tired to repost content so I'm linking to 4chan.


Flawed Science? Fun Bungalo "The" Kawaii Doon&!DFB39/8LnY 20/09/23(Wed)01:28 No. 17012 ID: baa2f3 [Reply]

File 160081732525.jpg - (323.88KB , 2040x1594 , dualipa.jpg )

I've found something out. There is only: ONE future.
How does she know that I will be nostalgic?

industrial electric motors Anonymous 20/04/07(Tue)12:33 No. 16901 ID: 107a06 [Reply]

File 158625559546.jpg - (93.69KB , 970x605 , мотор.jpg )

Guys, where I can find supplier for parts industrial electric motors?

Anonymous 20/04/07(Tue)13:44 No. 16902 ID: c9cecf

I heard that such industrial electric motors used in machine tools and heavy metal industry

Anonymous 20/04/07(Tue)14:56 No. 16903 ID: 107a06

For example, if you use frequency converter in your industrial enterprise I suggest you to check https://eltra-trade.com/catalog/abb-acs880 drive where you can find energyefficient and powerful drives. AS you know Semiconductor devices consist of a power part made on transistors or thyristors, and a control circuit based on microcontrollers. This electrical equipment is suitable for three-phase and single-phase drives of any purpose.

Anonymous 20/09/14(Mon)23:58 No. 17006 ID: 2292e4

You'll want to find a local company, but a general supply shop may be able to help. What specific parts do you need?

*NIX Anonymous 20/06/02(Tue)11:52 No. 16926 ID: 49b20f [Reply]

File 159109152345.png - (160.89KB , 1366x768 , 2020-06-02-040233_1366x768_scrot.png )

si@gaytop:~/nginx-scripts$ ./nginx-run-master.sh
Enter which network you are using.
:> K
Attempting to update default sites-available file...
Config has been updated.
Attempting to start nginx...
Success: started nginx with PIDs of 4790 4789 4788
si@gaytop:~/nginx-scripts$ ./nginx-kill.sh
[sudo] password for si:
All nginx processes killed.
si@gaytop:~/nginx-scripts$ cat nginx-kill.sh

sudo killall nginx
Message too long. Click here to view the full text.

6 posts and 1 image omitted. Click Reply to view.
Anonymous 20/07/04(Sat)20:08 No. 16941 ID: fb30bf


I would be willing to contribute. If you had a wiki I could contribute to that.

Could've sworn 7chan had a wiki, am I just blind?

Anonymous 20/07/05(Sun)03:39 No. 16942 ID: 7d3ff5

>I would be willing to contribute. If you had a wiki I could contribute to that.

>Could've sworn 7chan had a wiki, am I just blind?

Thank you for your kindness!

My IT knowledge: following clear instructions to do something step by step.
I can't do more than that.
I don't really know what to say to answer your question. I'm sorry.

By the way, the imageboard I want is perfectly legal. No porn, No political/religious/historical/sexual discussions. Only for students to have a place to ask and teachers to answer, and will be vigorously moderated.

Anonymous 20/07/13(Mon)06:23 No. 16943 ID: 2daf83

File 159461423682.png - (36.70KB , 377x559 , quick reply voice recorder.png )

How to have a recorder like that on my site?

SmartWater Spray Removal Anonymous 20/04/09(Thu)02:08 No. 16904 ID: c0476e [Reply]

File 158639091138.jpg - (68.46KB , 680x255 , StickyBritishGoo.jpg )

How is it impossible to remove this substance from skin or clothing? The British police are currently spraying their clear goo all over the faces of men.

Asking for a friend.

3 posts omitted. Click Reply to view.
Anonymous 20/05/07(Thu)21:47 No. 16917 ID: be6f8f

I like the way you think.

DrGonzy!!WvAwV4MTHk 20/06/03(Wed)08:52 No. 16929 ID: 49b20f

To sanitize clothing use a solution of at least 71 percent pure isopropyl. Put it in a spray misting bottle with a fine mister.

DrGonzy!!WvAwV4MTHk 20/06/03(Wed)08:52 No. 16930 ID: 49b20f

It is better to err on the side of caution, and go over 70 percent if you don't chemistry well.

HELP!! Anonymous 17/05/01(Mon)00:01 No. 16490 ID: e202d0 [Reply]

File 149358971341.png - (34.32KB , 769x733 , 1479011986675.png )

Can someone explain a quadratic equation in a way that makes it more intuitively understandable? My algebra teacher just rambles endlessly about unrelated shit.

2 posts omitted. Click Reply to view.
Anonymous 20/05/19(Tue)20:45 No. 16922 ID: fc6c5f

File 158991393645.jpg - (13.86KB , 489x184 , unnamed.jpg )


So you can see everything is on one side and on the other we got 0 so think about this like "where is the function equal to zero [f(x)=0]"
Look at the picture, you can see that there are 3 possibilities; 2 points at which function is equal to 0, 1 point (only the tip of parabola) or there are none. We solve it a bit differently in my country (I think in easier to understand form) so I'll show you how we are thought. First you look at 'a', a can't be equal to 0 (it would be linear equation if a=0), ok 'a' isn't 0 , that means we got a parabola, we can determine whether there are 2, 1 or 0 intersections with the X axis by calculating Δ (capital greek delta)
Δ=b^2 - 4ac
ok so you calculated the Δ, if the Δ<0 that means no intersections with X axis, Δ=0 1 intersection with X axis (the tip) and if Δ>0 we got 2 intersections with the X axis. When you got Δ<0 the equation can't be solved (no points at which function is equal to 0), if Δ=0 (only the tip is touching the X axis) you calculate the X coordinate of the tip, formula for that is (-b)/2a; if Δ>0 we must do a little bit more to solve the equation, because for Δ>0 there are 2 points touching the x axis, we use 2 formulas (-b+√Δ)/(2a) and (-b-√Δ)/(2a) similar to standard quadratic formula.

let's do some examples then

x^2 + 2x + 1 = 0

1) Δ= b^2 - 4ac = 4 - 4*1*1 = 0
2) Δ = 0 so we use formula for the X coordinate of the tip, (-b)/2a = (-2)/(2*1) = (-2)/2 = -1
3) f(x) = 0 if x = 1
Message too long. Click here to view the full text.

Anonymous 20/05/19(Tue)20:48 No. 16923 ID: fc6c5f

sorry, in the 1st example I wrote (f(x)=0 when x=1)

Anonymous 20/05/20(Wed)18:41 No. 16924 ID: be6f8f

Whoa, I just saw this the other day while I was looking for a comment I made in the seventh page.

Dude, you're responding to a question from three years ago. I'm sure OP has since learned what a quadratic equation is, or they don't care anymore.

Your method seems a tad too complex for my liking. Why do you think it's better than simply remembering
x = (-b (+/-)sqrt(b^2 - 4*a*c))/(2*a)
? That's a single formula that solves any quadratic equation in a single step.

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